Bar chair



March 25, 1930.

i w.- E. WHITE 1,751,673

BAR CHAIR Filed May 17, 1928 2 Sheets-Sheet l March 25, 1930. w. E. WHITE 3 BAR CHAIR Filed May 17, 1928 2 Sheets-$heet 2 Patented Mar. 25, 1930 Adl WILLIAM E. WHITE, OF CHICAGO, ILLINOIS, ASSIGNOB TO KALMAN STEEL COMPANY, OF CHICAGO, ILLINOIS, AOORPORATION OF DELAWARE BAR CHAIR Application filed May 17,

My invention relates to concrete construc tion and particularly to a novel chair adapted to support reinforcing bars. 7

The chair of my invention is primarily intended for use in connection with road work although it is adapted for other uses wherever one or more bars are intended to be supported in proper relation to forms preliminary to the pouring of concrete. A

fundamental idea ofthe invention is to pro vide a chair that may be economically constructed, quickly and simply applied and of relatively great strength. I

In road construction the chair is intended to be rested upon the soil'and must therefore be equipped with a relatively broad flat base.

This is provided by using a flat strip of metal having a horizontal foot, but such construction has heretofore resulted in a relatively weak structure due to the ease with which a flat, thin gauge section of metal will bend.

To obviate this difficulty and to provide the necessary requisites, I utilize a structure composed of two forms of material, that 1s a flat strip and a wire holding and bracing member. The parts are so related that they are complementary in all their functions and in addition are adapted for simple manipulation in the process of being interlocked.

The invention will be more readily understood by reference to the accompanying drawings, in which- Fig. 1 is a side elevation of a pair of chalrs constructed in accordance with my invention shown in operative relation;

Fig. 2 is an enlarged view thereof taken at right angles of Fig.1,

Fig. 3 is a view slmilar to Flg. 1 wlth parts considerably enlarged; 40 Fig. 4 is a view similar to Fig. 1 showmg a modified form of the invention, and

Figs. 5 and 6 are enlarged views similar to Figs. 2 and 3 showing in detail the modlfication of Figs. 3 and 4.

Referring particularly to Figs. 1 and 3', I have illustrated a structure adapted to support vertically alined, parallel bars A and B. The chair structure consists of a strlp of flat metal having a vertical straight portion 10 with a notch 11 in its upper end. At

1928. Serial No. 278,455.

the junction of the straight portion 10 with an lnclined portion 12 isformed a seat 13 for the bar B. The flat strip constituting the primary supporting member terminates at its lower end in a flat horizontally disposed foot 141: adapted to provide a broad base to rest on the soil. The inclined portion 12 is provided with a long slot 15 to receive the secondary member about to be described.

The secondary supporting member is preferably formed of heavy wire and has a straight vertical portion 16 terminating at its upper end in a hook 17 that surrounds the bar A after passing through the notch 11 in the upper end of the primary member. At the junction of the portion 16 with inclined portion 18, the wire is bent to cooperate with and pass partly around the bar B. The inclined portion 18 is complementary to the inclined portion 12 in the formation of what corresponds to an A frame, the portion 18 extending outwardly and downwardly to the free end of the foot 14 and thence horizontally backward in the form of an extension 19, the end of which fits into the angle of the portions 12, 14 of the primary member. The slit 15 in the portion 12 is proportioned to receive the parts 18, 19, the lower end of the slit terminating at such pointabove the end of the member 12 that the wire member must be sprung in order to permit the free end of the wire member to pass through the opening and to snap into the space at the angle as shown.

The parts are assembled manually and without the use of tools, the finger of the workman being placed in the angle of the parts 18, 19 of the wire member and a sharp pull exerted which will spring the metal sufficiently to permit the parts to engage as shown in the drawings. VJ hen in the position shown, the two parts cooperate in a complementary relation and suitably hold the 7 bars and brace the foot of the chair.

The construction shown in Figs. 4 to 6 inclusive is a development intended for the support of a single bar or of crossed bars, the latter relation being shown. In this construction bars C and D are indicated.

The primary member is constructed of a strip of sheet metal having a vertical portion 20, provided with a notch 21 at its upper end, the extremities 22 of the notched portion being bent into a horizontal position to pass over the bar C. A tongue 23 forming a part or" the metal struck out in forming the notch 21 is likewise bent horizontally and provides a seat for the angularly disposed bar D. The lower end of the primary supporting member is the same as that already described consisting of an inclined portion 24: having a slit 25 therein and a horizontal foot portion 26.

The secondarysupport member consists of a length of wire having a straight portion 27 terminating in a hook 28 at its upper end adapted to pass over the bar D and to function to retain the bar C in the angle between the portions 20, 22 of the primary support. The lower end construction of the secondary member is the same as that already described consisting of an inclined portion 29 and a horizontal foot portion 30 which cooperates with the primary member in the manner already described.

This construction provides a simple and effective means for supporting a single layer of crossed bars and may be installed without the use of any tools.

It will be understood that in the construction shown in Figs. 1 and 3, bars may likewise be supported at right angles to those illustrated, being placed alongside or adjacent to the chairs and held in place by suitable ties.

A construction such as described adapts itself readily to the conditions of the work of laying concrete pavement. If desired the assembly of the bars with the chair may be made in the shop and the mats formed in this manner may be handled and shipped to the job without fear of distortion of the chairs.

The invention is capable of other modifications than those shown and I do not wish to be limited except as indicated in the appended claims.

I claim: v

1. In a bar chair the combination of a primary support member having a horizontally disposed base for contact With the soil and an inclined element for contact with a bar, and a secondary support member having a bar engaging hook at its upper end and having its lower end shaped to interlock with the base and to support the free end thereof and being complementary to the said inclined element in the matter of support for said bar.

2. In a bar chair the combination of a primary support member terminating in an inclined portion for contact with a bar and a horizontally disposed base portion for contact with the soil, and a secondary support member having a bar engaging hook at its upper end, said upper end being adapted to engage the upper end of said primary support, said secondary support having its lower end bent to interlock with the base and to brace the free end thereof, and said bent portion being complementary to the bent portion of said primary support relative to the support of said bar.

3. In a bar chair the combination of a primary support member having a horizontally disposed base for contact with the soil and an inclined portion for contact with a bar, and a secondary. member, said secondary member cooperating with said primary memher as a support, and having a bar engaging hook at its upper end, and having its lower end bent to be received within and to support the free end of said base, the bent lower portions of both primary and secondary supports being complementary relative to the support of said bar.

4. In a chair for supporting bars the combination of primary and secondary supports, said primary and secondary supports each having an inclined portion terminating in a base portion, the inclined portion and base of said secondary support being adapted to interlock with and support the base of said primary member, and a bar hook on the upper end 01 said secondary support adapted to engage a bar.

5. In a bar support the combination of primary and secondary support members, each of said support members having an in clined portion terminating in a horizontally disposed base, a bar seat at the junction of the inclined portion and support member of said primary support, bar engaging means on the upper end of said secondary support, and means providing interlocking engagement of the inclined portions and bases of said supports.

6. In a bar support the combination of primary and secondary support members each of said support members having an inclined portion terminating in a horizontally disposed base, a bar seat at the junction of the inclined portion and support member of said primary and secondary supports, bar engaging means on the upper end of said secondary support, and means providing interlocking engagement with the inclined portions and bases of said supports.

7. In a bar support the combination of primary and secondary support members each of said support members having an in clined portion terminating in a horizontally disposed base, a bar seat at the junction of the inclined portion and support member of said primary support, bar engaging means on the upper end of said secondary su port, and means on the inclined portion ot said primary member whereby to permit interlocking engagement with the inclined portion and base of said secondary member.

8. In a bar support, the combination of primary and secondary support members, each of said support members having an inclined portion terminating in a horizontally disposed base, a bar seat at the 111110131011 of the support and inclined portions of said primary support, cooperating bar engaging I means on the upper ends of said support members, and means on said primary support for permitting interlocking engagement with the inclined and base portions of said secondary support.

9. In a device for supporting bars, the combination with a primary and secondary support member, of a bar seat between the ends of said primary member an inclined portion formed at the junction with said bar seat, said inclined portion terminating in a horizontally disposed base whereby said inclined portion forms an acute angle therewith, a

seat, said inclined portion terminating in a horizontally disposed base whereby said inclined portion forms an acute angle therewith, a bar engaging hook on the upper end or" said secondary member, an inclined portion formed at substantially the same height as on said primary member, said inclined portion terminating in a flat base at an acute angle therewith, and a slot formed in the inclined portion of said primary member for permitting interlocking engagement with the inclined and base portions of said secondary member.

In testimony whereof I have'affixed my signature. WILLIAM E. WHITE. 

